minor changes

organize it
add SU-related parts
play with correlation structures

play with correlation matrix decomposition, stimON/OFF, etc
play with correlation structures

try many different things dim reduction of covariance matrix, with and
without visual stimulation etc etc
play with correlation structures

make a clear idea about how compute the noise/signal/spontaneous
correlations.
Furthermore start including LFP in the analysis.
play with synchrony and correlation

many codes and drafts
temporal scale of correlation

play with different measure of synchrony and correlation